DD is just over 2 weeks old and I've gone through the wringer a bit iwth BF'ing, but been there before so i know it will get better

All went well initially she had a good attachment, which went bad when my milk came in, she ended up cause nipple fissues on both sides, causing them to bleed when feeding, it was a bit scary how much they would bleed

But the fissures have been healing, I expressed for 5 min before a feed to soften them, I did a combination of lasinoh and BM/air drying to heal, and continued feeding through. But her attachment ended up just being a clamp and she would cause the fissues to reopen, so I went to a nipple shield which I used sucessfully with DD1 until she was 10 weeks old. We are able to achieve some "barenipple" feeding as well, when she isn't so ravenous and is much more realxed, usually the second or third attachment for the feed.

However this morning my LHS boob is hurting, it isn't the fissue as that pain was different, I am getting sharp shooting pains all over the breast and feeding is not at all comfortable on that side.

I have checked DD's mouth and my breast and there a not signs of thrush, but I am wondering if I do have it, and what the treatment would be as I don't want to give meds to DD2 if she has no signs of it.

What else could it be?